Add Yahoo as a preferred source to see more of our stories on Google. Artist's view of WASP-107b. The planet’s low density and the intense irradiation from its star allow helium to escape the planet ...

The star’s intense radiation heats its atmosphere to several thousand degrees, allowing light gases like hydrogen and helium to escape into space. Over millions of years, this slow atmospheric escape ...

For decades, astronomers were only able to study the universe's very first stars using theoretical models. Now, observations from the James Webb Space Telescope (JWST) have revealed what may be the ...

The James Webb Space Telescope has caught a distant world in the act of falling apart, its outer layers peeling away into space as a vast cloud of helium. The planet, a so‑called “super‑puff” with the ...

Astronomers from the University of Geneva, working with colleagues in Canada and the United States, have captured the clearest view yet of an exoplanet losing its atmosphere into space. Using the ...